Thermal treatment in a fluidized bed

Details Thermal treatment in a fluidized bed Thermal treatment in a fluidized bed

1990-05-31

1991-11-12

Dean, R.

Metal treatment

Compositions

Heat treating

148 16, 432 58, 432 15, C21D 153, F27B 1502

Patent

active

050644793

ABSTRACT:
Processes and apparatus for the thermal treating of articles, particulary for the quench hardening of metal alloys in an improved fluidized bed containing from 21 to 60 weight percent of fine alumina particles having a size from 20 to 100 microns and from 40 to 79 weight percent of coarse alumina particles having a size from 150 to 2000 microns.

REFERENCES:
patent: 3053704 (1962-09-01), Munday
patent: 4222429 (1980-09-01), Kemp
Metals Handbook, 9th ed, vol. 4, pp. 299-306, 11/1981.
The "Bubbling Layer"-A New Quenching Medium with Controllable Cooling Capacity, N. N. Varygin, Metal Science and Heat Treatment of Metals, vol. 6, (1961), pp. 148-251.
"Fluid Bed Quenching of Steels: Applications are Widening", Delano and Van den Sype, Heat Treating, Dec. 1988.
"The Influence of a Substantial Fines Component on Bed-To-Tube Heat Transfer", Botterill and Hawkes, Proceedings of the International Conference on Fluidization, Alberta, Canada, May 7-12, 1989, pp. 661-668.

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